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WO2009006889A1 - Procédé d'identification d'un récepteur dans une prothèse auditive - Google Patents

Procédé d'identification d'un récepteur dans une prothèse auditive Download PDF

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Publication number
WO2009006889A1
WO2009006889A1 PCT/DK2007/050087 DK2007050087W WO2009006889A1 WO 2009006889 A1 WO2009006889 A1 WO 2009006889A1 DK 2007050087 W DK2007050087 W DK 2007050087W WO 2009006889 A1 WO2009006889 A1 WO 2009006889A1
Authority
WO
WIPO (PCT)
Prior art keywords
hearing aid
receiver
impedance
fitting
impedance measurement
Prior art date
Application number
PCT/DK2007/050087
Other languages
English (en)
Inventor
Morten Kroman
Original Assignee
Widex A/S
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Widex A/S filed Critical Widex A/S
Priority to CA2691105A priority Critical patent/CA2691105A1/fr
Priority to EP07764507A priority patent/EP2177052B1/fr
Priority to AU2007356359A priority patent/AU2007356359B2/en
Priority to DK07764507.5T priority patent/DK2177052T3/da
Priority to CA2723466A priority patent/CA2723466C/fr
Priority to JP2010513650A priority patent/JP5292396B2/ja
Priority to CN200780053484A priority patent/CN101743762A/zh
Priority to PCT/DK2007/050087 priority patent/WO2009006889A1/fr
Publication of WO2009006889A1 publication Critical patent/WO2009006889A1/fr
Priority to US12/683,407 priority patent/US8855323B2/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R25/00—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception
    • H04R25/30—Monitoring or testing of hearing aids, e.g. functioning, settings, battery power
    • H04R25/305—Self-monitoring or self-testing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2225/00—Details of deaf aids covered by H04R25/00, not provided for in any of its subgroups
    • H04R2225/021—Behind the ear [BTE] hearing aids
    • H04R2225/0213—Constructional details of earhooks, e.g. shape, material
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R25/00—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception
    • H04R25/70—Adaptation of deaf aid to hearing loss, e.g. initial electronic fitting

Definitions

  • the present invention generally relates to the field of hearing aids.
  • the present invention more specifically relates to a method for identifying a receiver in a hearing aid, to a hearing aid adapted to perform such a method and to a system for fitting a hearing aid, the system being adapted to perform such a method.
  • a hearing aid In the field of hearing aids it is well known to use one or more fitting parameters of a hearing aid, such as e.g. hearing aid gain and pa- rameters regarding acoustic properties, to adapt the hearing aid to the individual hearing needs of a user. For instance it is known from EP-A2- 1517583 to estimate the acoustic impedance of a users ear canal by measuring the input impedance of the earpiece of a hearing aid placed in said ear canal, and to use the measured impedance value to fit the hear- ing aid to the users ear canal.
  • fitting parameters of a hearing aid such as e.g. hearing aid gain and pa- rameters regarding acoustic properties
  • Hearing aids of the RITE (Receiver In The Ear) type generally comprise a Behind-The-Ear (BTE) housing component and a Receiver-In- The-Ear (RITE) component, the RITE component comprising connecting means to connect the BTE housing component and the RITE-component. Furthermore a receiver, i.e. a speaker or acoustic output transducer, is provided in the RITE-component.
  • Some hearing aids of the RITE-type have been provided with connector systems in order to make the receiver easy to replace as the receiver may simply be disconnected from the RITE-component and/or the BTE housing component by unplugging the connection means. Hence, there is a possibility of combining different hearing aids with dif- ferent receivers.
  • the type and fitting parameters of a hearing aid is strongly dependent on the choice of receiver. Therefore the correct combination of type of hearing aid, fitting parameters of the hearing aid and receiver is crucial, as an incorrect combination may result in a sig- nificant maladjustment of the hearing aid.
  • the present invention therefore aims at providing a method for identifying a receiver in a hearing aid, whereby the necessary consequences may be taken in a simple and time efficient manner.
  • this object is achieved by pro- viding a method for identifying a receiver in a hearing aid comprising the steps of providing a hearing aid, providing said hearing aid with a receiver, measuring the impedance of said receiver using said hearing aid, identifying said receiver as one of several predetermined receiver models on basis of said impedance measurement, and issuing a message.
  • a method for identifying a receiver in a hearing aid comprising the steps of providing a hearing aid, providing said hearing aid with a receiver, measuring the impedance of said receiver using said hearing aid, identifying said receiver as one of several predetermined receiver models on basis of said impedance measurement, and issuing a message.
  • the method further comprises the step of taking action on said impedance measurement by adjusting the hearing aid and/or the hearing aid parameters to fit to the specific model of receiver identified in case adjustment is possible.
  • the method further comprises the step of taking action on said impedance measurement by replacing the receiver in case adjustment of the hearing aid to the specific model of receiver identified is not possible. Thereby it is ensured that any combination of receiver, hearing aid and hearing aid fitting parameters being impossible, illegal or the like will be discovered and corrected as quickly as possible.
  • the step of providing a receiver comprises replacing a first receiver initially connected to the hearing aid with a second receiver. This allows for a defective or otherwise malfunctioning receiver to be replaced prior to performing the measurement.
  • the impedance of a receiver is measured using at least one measuring signal frequency.
  • the possibility of measuring at several dif- ferent measuring signal frequencies opens the possibility of achieving a result comprising several impedance values characteristic for the receiver measured upon.
  • one characteristic impedance value is obtained for every measurement signal frequency used.
  • the specific model of a receiver is identified by comparing the impedance values measured with predetermined characteristic impedance values for a plurality of receiver types. Performing this step for one or more measured characteristic impedance values enables identification of even receiver models having characteristic impedances lying relatively close to each other for certain measuring signal frequencies. However, in most cases it will only be necessary to compare one measured impedance value with the set of predetermined impedance values, as the mutual gaps between characteristic impedance values for the most commonly used receiver models is sufficiently large to safely determine the correct receiver model.
  • the impedance measurement and/or the adjustment of the hearing aid and/or hearing aid parameters is controlled internally by said hearing aid itself.
  • This embodiment enables a particularly simple way of performing the method according to the invention, since no additional external means are needed for the process.
  • the method further comprises the step of providing a system for fitting a hearing aid.
  • the impedance measurement and/or the adjustment of the hearing aid and/or hearing aid parameters is controlled externally by said system for fitting a hearing aid.
  • the impedance measurement and the adjustment may be performed as part of a fitting procedure that may have to be per- formed for other reasons such as e.g. fitting the hearing aid to the ear canal of a user.
  • the invention provides a hearing aid of the receiver-in-the-ear type, the hearing aid comprising means for connecting one of a plurality of receivers adapted for placement in a hearing aid user's ear and means for communicating with external equipment connected to the hearing aid, wherein the hearing aid comprises means for measuring the impedance of a receiver connected to the hearing aid, means for carrying out a decision based on a result of the impedance measurement and means for communicating the decision to the external equipment.
  • the invention provides a system for fitting a hearing aid, wherein the system comprises a computer, suitable hearing aid fitting software installed for execution on said computer, and at least one hearing aid, said hearing aid comprising means for measur- ing the impedance of a receiver connected to the hearing aid, means for carrying out a decision based on a result of the impedance measurement and means for communicating the decision to the computer.
  • fig. 1 shows a perspective view of a hearing aid of the RITE-type comprising a BTE housing component and a RITE component
  • fig. 2 shows an exploded view of a RITE component of a hearing aid of the RITE-type
  • fig. 3 shows a circuit diagram illustrating a preferred embodiment of a hearing aid comprising a circuit capable of performing a method according to the present invention.
  • FIG. 1 shows a RITE-type hearing aid 1 as initially described.
  • a hearing aid comprises a Behind-The-Ear (BTE) housing component 2, and a Receiver-In-The-Ear (RITE) component 3.
  • the RITE component comprises a connector 4, a receiver housing 5 and an earplug 6.
  • the connector 4 serves to electrically connect the sound producing parts of the RITE-component 3 with the BTE housing component 2.
  • the connector 4 comprises an electrically conductive means 7, a coupling means 8 for coupling the RITE component 3 to the BTE housing component 2 and a fixture 9.
  • the RITE component 3 further comprises an earwax guard 19, a receiver housing 5, a receiver sealing 18 and a receiver 10.
  • the fixture 9 is provided to connect the receiver 10 in the receiver housing 5 with the connector 4.
  • the abovementioned coupling means 8 provides for an easy exchange of the whole RITE component 3 and thereby the receiver 10.
  • the fixture 9 may in a simple manner be released form the receiver housing 5 enabling easy exchange of the receiver 10.
  • exchanging the receiver in one of the mentioned ways does not necessarily enable a user or a technician to visually identify the receiver before coupling it to the BTE housing component 2 a need for easy identification of receiver model has arisen.
  • receiver model means the brand of receiver and the specific model in relation to the specific brand.
  • brands of receivers are e.g. Sonion and Knowles.
  • models are e.g. the ED-26871 manufactured by Knowles or the CI-6697 manufactured by Sonion.
  • measuring the impedance using said hearing aid is meant to measure the impedance of a receiver using components inherent in the hearing aid only to control and perform the measurement. These components will be the subject of further description below.
  • predetermined characteristic impedance of a receiver means a previously measured impedance value that is characteristic for a specific receiver model. Such a value is measured for each relevant receiver model using a direct current (DC) as measuring signal.
  • DC direct current
  • execution unit means any suitable unit capable of executing executable computer code of a computer program or computer program product.
  • the present invention makes use of the fact that standard electrical signal processing circuits already present in RITE-type hearing aids are already adapted to perform acoustical impedance measurements, for instance for the purpose of fitting a hearing aid to the geometry of a user's ear canal as initially described, and may thus easily be adapted for electrical impedance measurements.
  • Fig. 3 shows a circuit diagram illustrating an example of such an electrical signal processing circuit inherent in a hearing aid 1.
  • the circuit as shown comprises a measurement unit 12 comprising an A/D (ana- log/digital) converter 13, a logic unit 14 and a memory unit 15, which measurement unit 12 by use of a switch SW2 may be connected over a capacitor 17 either to a microphone 11 or to the receiver 10.
  • the capacitor 17 may be a polarized capacitor or an electrolyte.
  • the circuit furthermore comprises an alternating current (AC) signal generator 16, a switch SW3, a switch SWl and a resistor Rl.
  • the AC signal generator 16 may generate a measuring signal via the switch SW3 having one predetermined frequency.
  • the AC signal from the AC signal generator 16 may be fed either through the resistor Rl by opening the switch SWl or directly to the receiver 10 by closing the switch SWl.
  • a digital signal processor (DSP) 20 and an output stage or D/A (digital/analog) converter 21 is provided for hearing aid functionality.
  • the impedance of a receiver 10 may in a preferred embodiment be measured using the A/D converter 13 to measure the receiver load when the AC signal from the AC signal generator 16 is fed through the resistor Rl to the receiver 10 by opening the switch SWl and when the AC signal is fed directly to the receiver 10 by closing the switch SWl and subsequently calculate the difference in receiver load.
  • the difference in receiver load found may then be used to calculate the impedance of the receiver 10.
  • the logic unit 14 of the measurement unit 12 may be used to control the switches SWl, SW2 and the AC signal generator 16 during the measurement procedure.
  • the resulting impedance value may be stored in the memory unit 15.
  • the measurement unit 12 may, possibly in place of the A/D converter 13, comprise a unit adapted to measure a DC voltage, for instance a voltmeter.
  • the measure- ment unit 12 used in the method according to the invention may be any measurement unit suitable for the purpose.
  • the measurement unit used is the measurement unit of a system for fitting a hearing aid.
  • Identification of the receiver model according to the invention is performed on basis of the abovementioned impedance measurement.
  • the model of the receiver 10 measured upon may be determined.
  • the predetermined characteristic impedances of relevant receiver models may be stored, e.g. in a database, in a memory unit of the measurement unit used for measuring, in the preferred embodiment being the memory unit 15 of the measurement unit 12, and the comparison may be performed by an execution unit of the measurement unit, in the preferred embodiment being the logic unit 14.
  • the abovementioned identification may be performed with high certainty as there has been shown to be a clear relation between the predetermined characteristic impedance of a receiver and the receiver model when measuring at a given measuring signal frequency.
  • An example of the relation between receiver model and characteristic impedance is shown in table 1 below.
  • the impedance values stated are achieved by an ohmic measurement using a constant DC. It can be seen that the difference between characteristic impedances of different receiver models is sufficiently large to enable identification with a high level of certainty.
  • the possibility mentioned previously of measuring at several different measuring signal frequencies opens the possibility of achieving a result comprising several impedance values characteristic for the receiver measured upon.
  • Such a result may be used to discern receiver models having characteristic impedance values lying close together at some measuring signal frequencies, but farther apart at other frequencies.
  • a warning message such as for instance a warning message.
  • a warning message may for instance state whether a potential subsequent adjustment is possible or it may state that the receiver model identified constitutes an e.g. MIe- gal or disallowed combination with the hearing aid in which it has been inserted.
  • the warning message could for instance be a sound or a sequence of sounds emitted in case the combination of receiver and hearing aid is illegal, disallowed or the like.
  • any other useful type of warning message may also be used in the method according to the invention.
  • action may be taken on said impedance measurement, for instance on basis of the message issued, by replacing the receiver in case the combination of hearing aid and receiver model is deemed illegal, disallowed or the like.
  • the method according to the invention as described above will be performed again to identify the model of the replacement receiver.
  • action may be taken on said impedance measurement, for instance on basis of the message issued, by adjusting the hearing aid or the hearing aid parameters to suit the receiver model identified in case adjustment is possible.
  • hearing aid parameters any parameter generally used to fit a hearing aid to the individual hearing needs of a user. As mentioned initially examples of such parameters are hearing aid gain and parameters regarding acoustic properties.
  • the impedance measurement and/or the adjustment is controlled in- ternally by the RITE-type hearing aid 1 itself. If both the impedance measurement and the adjustment are controlled by the hearing aid itself no external components or devices are needed to carry out these steps of the method according to the invention, making the embodiment particularly simple. In the embodiment described above this is achieved by the measurement unit 12 of the RITE-type hearing aid 1.
  • the impedance measurement and the adjustment may be controlled by an external system, in particular a system for fitting a hearing aid or a com- puter system.
  • the identification of the receiver model and the adjustment may be performed as part of a fitting procedure.
  • the method according to the present invention may be controlled by any system suitable for the purpose.
  • a suitable system comprises a measurement unit gen- erally comprising an execution unit and a memory unit.
  • execution unit means any suitable unit capable of executing executable computer code of a computer program or computer program product according to another aspect of the invention.
  • the system may also comprise other components such as e.g. an A/D con- verter.
  • the execution unit is the logic unit 14
  • the memory unit is the memory unit 15.
  • the execution unit may be a computer system carrying out the method according to the present invention.
  • a computer system may be applied in a fitting situation in which the hearing aid to be fitted is also connected to the computer system which also comprises executable program code for carrying out a fitting routine.
  • the program code executed on the computer system then in- eludes program portions necessary for carrying out all appropriate steps of the method according to the present invention, including program portions of measuring the impedance of the receiver using at least one measuring signal frequency, identifying the receiver as one of several predetermined receiver models on basis of the impedance measurement, issuing a message, adjusting the hearing aid or the hearing aid parameters to fit to the specific model of receiver identified, and comparing the impedance measured with predetermined characteristic impedance values for a plurality of receiver types.
  • Methods according to embodiments of the present invention may be implemented in any suitable data processing system like a personal computer or workstation used by, e.g., the audiologist when fitting a hearing aid. Methods according to the present invention may also be implemented in a computer program containing executable program code executing methods according to embodiments described herein. If a client-server-environment is used, an embodiment of the present invention comprises a remote server computer, which embodies a system according to the present invention and hosts the computer program executing methods according to the present invention.
  • the memory unit may be a computer program product like a computer readable storage medium, for example, a floppy disk, a memory stick, a CD-ROM, a DVD, a flash memory, or any other suitable storage medium provided for storing the computer program according to the present invention.
  • the computer program may be stored in a memory unit of a hearing aid, such as the memory unit 15, or a computer memory and executed by the hearing aid itself or a processing unit like a CPU thereof or by any other suitable processor or a computer executing a method according to the present invention. All appropriate combinations of features described above are to be considered as belonging to the invention, even if they have not been explicitly described in their combination. Moreover it should be noted that the above description of preferred embodiments is merely an example, and that the skilled person would know that numerous variations are possible without departing from the scope of the claims.

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  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Neurosurgery (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
  • Telephone Function (AREA)

Abstract

La présente invention concerne un procédé d'identification d'un récepteur dans une prothèse auditive de type RITE ('Receiver In The Ear': Récepteur dans l'oreille) (1). Il se compose des étapes suivantes : mise à disposition d'une prothèse auditive de type RITE (1) en dotant cette prothèse d'un récepteur (10), mesure de l'impédance de ce récepteur (10) en utilisant cette prothèse (1), identification du récepteur (10) comme étant l'un des modèles de récepteurs prédéterminés sur la base de la mesure d'impédance, et envoi d'un message concernant le résultat de la mesure d'impédance. Cette prothèse auditive pourra comprendre les moyens de mesure de l'impédance du récepteur.
PCT/DK2007/050087 2007-07-10 2007-07-10 Procédé d'identification d'un récepteur dans une prothèse auditive WO2009006889A1 (fr)

Priority Applications (9)

Application Number Priority Date Filing Date Title
CA2691105A CA2691105A1 (fr) 2007-07-10 2007-07-10 Procede d'identification d'un recepteur dans une prothese auditive
EP07764507A EP2177052B1 (fr) 2007-07-10 2007-07-10 Procédé d'identification d'un récepteur dans une prothèse auditive
AU2007356359A AU2007356359B2 (en) 2007-07-10 2007-07-10 Method for identifying a receiver in a hearing aid
DK07764507.5T DK2177052T3 (da) 2007-07-10 2007-07-10 Fremgangsmåde til idenfikation af en højttaler i et høreapparat
CA2723466A CA2723466C (fr) 2007-07-10 2007-07-10 Procede d'identification d'un recepteur dans une prothese auditive
JP2010513650A JP5292396B2 (ja) 2007-07-10 2007-07-10 補聴器中のレシーバを識別する方法
CN200780053484A CN101743762A (zh) 2007-07-10 2007-07-10 用于识别助听器中的接收器的方法
PCT/DK2007/050087 WO2009006889A1 (fr) 2007-07-10 2007-07-10 Procédé d'identification d'un récepteur dans une prothèse auditive
US12/683,407 US8855323B2 (en) 2007-07-10 2010-01-06 Method for identifying a receiver in a hearing aid

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/DK2007/050087 WO2009006889A1 (fr) 2007-07-10 2007-07-10 Procédé d'identification d'un récepteur dans une prothèse auditive

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US12/683,407 Continuation-In-Part US8855323B2 (en) 2007-07-10 2010-01-06 Method for identifying a receiver in a hearing aid

Publications (1)

Publication Number Publication Date
WO2009006889A1 true WO2009006889A1 (fr) 2009-01-15

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DK2007/050087 WO2009006889A1 (fr) 2007-07-10 2007-07-10 Procédé d'identification d'un récepteur dans une prothèse auditive

Country Status (8)

Country Link
US (1) US8855323B2 (fr)
EP (1) EP2177052B1 (fr)
JP (1) JP5292396B2 (fr)
CN (1) CN101743762A (fr)
AU (1) AU2007356359B2 (fr)
CA (2) CA2723466C (fr)
DK (1) DK2177052T3 (fr)
WO (1) WO2009006889A1 (fr)

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CN101743762A (zh) 2010-06-16
US20100111315A1 (en) 2010-05-06
CA2691105A1 (fr) 2009-01-15
JP2010531126A (ja) 2010-09-16
CA2723466C (fr) 2015-02-17
AU2007356359B2 (en) 2011-03-31
CA2723466A1 (fr) 2009-01-15
EP2177052A1 (fr) 2010-04-21
AU2007356359A1 (en) 2009-01-15
US8855323B2 (en) 2014-10-07
JP5292396B2 (ja) 2013-09-18
DK2177052T3 (da) 2012-08-13

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